<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>

    <div id="app">
        <button>性能监听</button>
    </div>
</body>
<style>
  #app {
    width: 300px;
    height: 300px;
    background-image: linear-gradient(130deg, #f6f8ff 0%, #fcfcff 100%);
  }
</style>
</html>
